Microevolution…:
select one:
a. is so small that you can’t see it.
b. explains the origin of man.
c. is a change in allele frequencies within a population
d. is the development of a new species.

Option C.

Macroevolution is a change in allele frequencies within a population.

Explanation:

Microevolution is the change in allele frequencies within a population over time. Microevolution is caused by four processes which are natural selection, artificial selection, gene flow and gene drift and these are referred to as fundament forces of evolution.

c: warm water flows from the western tropical pacific toward south america. that should be the right answer! hope it .